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Study on the effects of organic matter characteristics on the residual aluminum and flocs in coagulation processes 被引量:3
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作者 Hui Xu Dawei Zhang +3 位作者 Zhizhen Xu Yanjing Liu Ruyuan Jiao Dongsheng Wang 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2018年第1期307-317,共11页
Characteristics of organic matter may affect the residual aluminum after the coagulation process. This study reported the results of a survey for one drinking water treatment plant and measured the concentration of re... Characteristics of organic matter may affect the residual aluminum after the coagulation process. This study reported the results of a survey for one drinking water treatment plant and measured the concentration of residual aluminum species with different molecular weights.Survey results indicated that humic acid or organic matter whose molecular weight was smaller than 1500 Da had significant effects on residual aluminum. All the treatment processes were ineffective in removing dissolved organic matter whose molecular weight was smaller than1500 Da. These results also indicated that the addition of sand or polyacrylamide in the coagulation process could greatly decrease the concentration of humic acid, and the concentration of residual aluminum also decreased. These results revealed that for all water samples after filtration, the majority of total residual aluminum existed in the form of total dissolved aluminum, accounting for 70%–90%. The concentration of residual aluminum produced in bovine serum albumin solutions indicated that when the DOC was larger than4.0 mg/L, there were still significant differences when the solution p H value varied from 4.0 to 9.0. 展开更多
关键词 Coagulation residual aluminum Organic matter Floc size fractal dimension
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